Bung closure for metal vessels



July 16, 1935.

K, w. MAus ia 2,008,079

BUNG CLOSURE FOR METAL VESSELS Filed March 10, 1952 lllllll 1 I/NVGNTOQ wwu' Patented July 16, 1935 BUNG CIDSURE FOR METAL VESSELS Karl Wilhelm Mauser, Cologne-Marienburg,

Germany Application March 10, 1932', Serial No. 598,021

Germany July 14, 1931 Claims. (01. 220

ments, viz. that the manufacture of the bung bushing and its attachment to the shell of the 5 vessel shall not be costly; that the tight joint shell that the closure can be secured against being inadvertently opened by a beaded-over cap.

Individually these requirements are less satisfactorily fulfilled in the bung closures 5 hitherto known, but collectively only by the present invention. The invention consists in the attachment of a securing cap which beaded over.

In the accompanying drawing two constructional examples of the invention are illustrated.

Fig. 1 is a central vertical section of the lefthand half of one constructional form 01. the bung closure and Fig. 2 is a central vertical section of the lefthand half of a modification.

Fig. 1 shows a hung bushing consisting of two parts, of which a is the threaded part and b the polygonal part which is connected to the bushing a by electric spot welding and prevents the bushing from turning. The bushing a, b is connected to the vessel shell b by an overlapping part c which merges into a folded-over ring a, to which a folded-over ring a' having an external beading a on the threaded part a corresponds. The overlapping part c acts as the tight-- jointing surface. h is the tight-jointing for the bung h. d is an abutment at the foot of the overlapping part c for the engagement of the Jeaded-over rim 7 of the securing cap 9.

According to Fig. 2 the threaded part a of the lung bushing and the polygonal part b for preenting it from turning are integral with one more 01' another. The head of the bung bushing is substantially circular and projects outwards over by heading and thereby a secure hold in the overlapping part c.

'Although the termfpolygonal is used in the meaning of that term, but that it may be con- 10 strued to cover any non-circular formation.

What I claim is:

l.- A bung closure for meter vessels, comprising a bung bushing adapted to receive a cover cap flange for preventing the bung bushing from rometal of the bushing support folded over it formcan be beaded for securing the cap in position.

2. A bung closure for metal vessels, compriscombination with a bushing support embossed outwardly from the wall of the vessel, said bushing support being folded over said polygonal flange for preventing the bung bushing from rotating' and having its edge folded over the external beading at the outer end of said bushing to hold and seal the latter, the folded edge of the support overlying said external beading formend of said bushing so as to hold ing an abutment for the flange of a cover threaded in said bushing.

(l. A bung closure for metal vessels, comprising a bung bushing adapted to receive a cover cap and comprising a body portion with an external. beading at its outer end and a separately formed polygonal flange rigidly secured to said body portion below said beading in oombination with a bushing support embossed outwardly from the wall of the vessel, saidbushing support being folded over said polygonal flange for preventing the bung bushing from rotating and having its edge folded over the external beading at the outer v the bushing in position and seal the bung bushing, said external beading and the metal of the bushing support folded over it forming an abutment over which a bung bushing the edge of the cover cap o'an be beaded for securing the cap in position.

5. A bung closure for metal vessels,- comprising adapted to receive a cover cap and having its outer end folded to form an overlapping part of fiat elliptical shape having an external beading, said bushing having a polygonal flange below said heading in combination with a bushing support embossed outwardly from the wall of the vessel, said bushing support being folded over said polygonal flange for preventing the bung bushing from rotating and having its edge folded over the external beading at the outer end of said bushing so as to hold the bushing in position and seal the bung bushing, said external beading and the metal of the bushing support folded over it forming an abutment over which the edge of the cover can can be beaded for securing the cap in position".

" KARL WILHELM MAUSER. 

